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Stop Light Switch Wire for Installing a Brake Controller on a 2013 Audi Q5  

Question:

Thanks for getting back to me on this. If you want to update your response, the proper wire is solid red. You'll find brown, purple, and red on the brake pedal switch.

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Expert Reply:

According to my research the wire that carries the cold side of the stop light switch on your 2013 Audi Q5 should either be Red, Red/Gray, or Red/Black. You will need to test this with a circuit tester like part # PTW2992 and then connect the red wire from the pigtail # 20127 for the Voyager # 39510.

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Jon G

Kevin H.

5/6/2019

Thanks for getting back to me on this. If you want to update your response, the proper wire is solid red. You'll find brown, purple, and red on the brake pedal switch.

Jon G.

5/6/2019

Thank you for the information! I'll post this as a follow up for future readers!

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